Share Email Print
cover

Proceedings Paper

The propagation characteristics of THz radiation in hollow circular waveguides coated with different material films
Author(s): Dongmei Lu; Yong Zhang; Zhidong Zhang; Jianquan Yao
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

In the present study, the propagation characteristics of terahertz radiation in both metallic film-coated and dielectric film-coated hollow waveguides have been theoretically analyzed. The dominant modes in metallic film-coated and metal/dielectric film-coated hollow waveguides are respectively TE11 and HE11 modes. Theoretical attenuation coefficients of terahertz radiations in hollow waveguides with a bore diameter of 1mm film-coated with Au, Pb and Ni at different incident frequencies are compared. The dominant mode, i.e. TE11 mode, as a function of bore diameter in hollow waveguides film-coated with different metals are calculated at a given incident frequency. An additional dielectric film with appropriate thickness on the metal films can effectively enhance the wave reflection, resulting in decreased attenuation of the terahertz radiation propagating in hollow waveguides. Calculated results indicate that the attenuation of the terahertz radiation in metal/dielectric film-coated hollow waveguide with a bore diameter of 1mm for a given incident wavelength of 200μm is about 4 times lower than that in metal hollow waveguide with the same bore diameter.

Paper Details

Date Published: 16 February 2009
PDF: 7 pages
Proc. SPIE 7277, Photonics and Optoelectronics Meetings (POEM) 2008: Terahertz Science and Technology, 72770Q (16 February 2009); doi: 10.1117/12.821614
Show Author Affiliations
Dongmei Lu, Hebei Univ. of Technology (China)
Yong Zhang, Hebei Univ. of Technology (China)
Zhidong Zhang, Hebei Univ. of Technology (China)
Jianquan Yao, Tianjin Univ. (China)


Published in SPIE Proceedings Vol. 7277:
Photonics and Optoelectronics Meetings (POEM) 2008: Terahertz Science and Technology
Jianquan Yao; Shenggang Liu; Xi-Cheng Zhang, Editor(s)

© SPIE. Terms of Use
Back to Top